<!-- Login组件 -->
<template>
<div class="login_container">
    <div class="login_box">
        <!-- 头像区域 -->
        <div class="avatar_box">
            <img src="../assets/logo.png" alt="">
        </div>

        <!-- 表单区域 -->
        <el-form ref="loginFormRef" :model="loginForm" :rules="loginFormRules" class="login_form" label-width="0px">
            <!-- 用户名 -->
            <el-form-item prop="username">
                <el-input v-model="loginForm.username" prefix-icon="iconfont icon-user"></el-input>
            </el-form-item>
            <!-- 密码 -->
            <el-form-item prop="password">
                <el-input v-model="loginForm.password" prefix-icon="iconfont icon-3702mima" type="password"></el-input>
            </el-form-item>
            <!-- 按钮区域 -->
            <el-form-item class="btns">
                <el-button type="primary" @click="login">登录</el-button>
                <el-button type="info" @click="resetLoginForm">重置</el-button>
            </el-form-item>
        </el-form>
    </div>
</div>
</template>

<script>
export default {
    data() {
        return {
            // 登录表单的数据绑定对象
            loginForm: {
                username:'admin',
                password:'123456'
            },
            // 表单的验证规则对象
            loginFormRules:{
                //验证用户名是否合法
                username:[
                    { required: true, message: '请输入登录名称', trigger: 'blur' },
                    { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
                ],
                //验证密码是否合法
                password:[
                    { required: true, message: '请输入登录密码', trigger: 'blur' },
                    { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
                ]
            }
        }
    },
    methods:{
        //点击重置按钮，重置login表单
        resetLoginForm(){
            this.$refs.loginFormRef.resetFields();
        },
        //点击登录按钮，验证输入框信息是否合法，合法则提交请求到服务器，服务器会返回响应，响应里
        // 有data属性，是个对象，可以用来判断登陆是否成功，成功的话则将token存放到sessionstroge里并跳转到Home页面
        login(){
            this.$refs.loginFormRef.validate(async (valid)=>{
                // console.log(valid);
                if(!valid) return;
                const {data:res} = await this.$http.post('login',this.loginForm);
                if(res.meta.status != 200) return this.$message.error('登录失败');
                this.$message.success('登录成功！');
                //登陆成功之后将token保存到sessionstroage中
                window.sessionStorage.setItem("token",res.data.token);
                //路由的跳转
                this.$router.push('/home')

            });
        }
    }
}
</script>

<style lang='less' scoped>
.login_container{
    height: 100%;
    background-color: #2b4b6b;
}
.login_box{
    width: 450px;
    height: 300px;
    background-color: #fff;
    border-radius: 3px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);

    .avatar_box
    {
        height: 130px;
        width: 130px; 
        background-color: #fff;
        border: 1px solid #eee;
        border-radius: 50%;
        padding: 10px;
        box-shadow: 0 0 10px #ddd;
        position: absolute;
        left: 50%;
        transform: translate(-50%,-50%);
        img
        {
            width: 100%;
            height: 100%;
            border-radius: 50%;
            background-color: #eee;
        }
    }
}

.login_form
{
    position: absolute;
    bottom: 10px;
    width: 100%;
    padding: 0 40px;
    box-sizing: border-box;
}

.btns
{
    display: flex;
    justify-content: flex-end;
}



</style>